Question

A cell phone plan offers a monthly rate of $25 for unlimited minutes plus $.05 per text message. Which algebraic expression below represents the total cost for this cell phone plan in terms of "x?"

25.05x

25x + 0.05

25 + 0.05x

24.95x

Question 23 (Multiple Choice Worth 1 points)

[2.01]

2 + (a + b) = (2 + a) + b is an example of which algebraic property?

Distributive Property

Associative Property of Addition

Commutative Property of Addition

Symmetric Property

Answer 1

@Algebraic! @mathman12

Answer 2

The first one is 25 + .05x

Answer 3

C and B. Heres why:

For the first one, I like to think about it realistically.

Your paying 25 no matter what, and then a .05 for each message. So, 25+.05x, because as x increases, the cost increases.

For the second one, the associative property of addition/multiplication tells you that if you have three numbers added or multiplied together, it doesn't matter where you put the parentheses, and in the problem, they moved the parentheses, but the equation was still true.